CN111813257B - Touch processor, touch device, touch system and touch method - Google Patents

Abstract

The invention relates to a touch processor, a touch device, a touch system and a touch method. The touch control method includes: sensing a first electrical signal close to a touch device to generate a second electrical signal, and the frequency of the first electrical signal is a default frequency; detecting whether the frequency of the second electrical signal is the default frequency; when the frequency of the second electrical signal is the default frequency, detecting a function value of the second electrical signal; and detecting the second electrical signal according to the function value of the second electrical signal intensity to determine whether there is a transmitter suspended on the touch device.

Description

Touch processor, touch device, touch system and touch method

This application is a divisional application of the invention patent application titled "Touch processor, touch device, touch system and touch method" with application number 201510278186.1. The filing date of the original application is May 27, 2015 .

Technical field

The present invention relates to a touch device, and in particular to a touch processor, a touch device, a touch system and a touch method that determines the proximity of a transmitter.

Background technique

Touch panels or touch screens are an important modern human-computer interface. In addition to being used to detect objects that are close to or in contact with the human body (collectively referred to as proximity), touch panels are also used to detect pen-like objects that are in proximity, or touch. The tip of the pen allows the user to more accurately control the trajectory of the pen tip's touch.

There are two main types of stylus. One is a non-active pen that does not emit signals. The corresponding touch panel/screen uses capacitive, resistive, or other optical or acoustic mechanisms to detect the above-mentioned non-active pens. Active pen and finger. The other type is an active pen that emits electrical signals. The corresponding touch panel/screen detects electrical signals to find out the relative position of the active pen on the touch panel/screen and/or the status of the active pen. The mode of detecting the non-active pen/finger is different from the mode of detecting the electrical signal emitted by the active pen. How to know early that the active pen is close to the touch panel/screen for corresponding detection is an important issue at present.

Contents of the invention

The purpose of the present invention is to provide a new touch processor, touch device, touch system and touch method. The technical problem to be solved is to enable it to know early that the active pen is close to the touch panel/screen to perform operations. Corresponding detection is very suitable for practical use.

The purpose of the present invention and solving its technical problems are achieved by adopting the following technical solutions. A method for determining that a transmitter is close to a touch device according to the present invention includes: sensing a first electrical signal approaching a touch device to generate a second electrical signal; and detecting the second electrical signal. Strength to determine whether there is a transmitter suspended on the touch device.

The purpose of the present invention and solving its technical problems can also be further achieved by adopting the following technical measures.

The aforementioned method, wherein when the intensity of the second electrical signal is greater than a first threshold value, it is determined that the transmitter is suspended on the touch device, and when the intensity of the second electrical signal is greater than a second threshold value, It is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

The aforementioned methods also include:

Detecting whether the frequency of the second electrical signal is a default frequency, wherein when the frequency of the second electrical signal is the default frequency, detecting the strength of the second electrical signal, wherein the transmitter sends out the first electrical signal signal, and the frequency of the first electrical signal is the default frequency.

The aforementioned method, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, when it is determined that the transmitter is suspended on the touch device, it is detected simultaneously or in a time-sharing manner that the transmitter is on the plurality of driving electrodes. The floating position on the electrode and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned method, when it is determined that the transmitter is suspended on the touch device, an area is set. The area includes the floating position of the transmitter, and the detection of the transmitter is performed in this area. Outside the area, The touch device performs mutual capacitance touch detection.

The aforementioned method, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, detecting to detect the intensity of the second electrical signal, or to detect all of the plurality of sensing electrodes when the coverage area of the plurality of sensing electrodes is greater than the coverage area of the plurality of driving electrodes. or part to detect the strength of the second electrical signal.

The aforementioned method, wherein when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float, or when all or part of the plurality of sensing electrodes are detected. Partially, the undetected driving electrodes and sensing electrodes are set to floating.

The purpose of the present invention and solving its technical problems are also achieved by adopting the following technical solutions. A method for determining that a transmitter is close to a touch device is proposed according to the present invention, including: sensing a first electrical signal approaching a touch device to generate a second electrical signal; detecting a signal exported from the touch device to The strength of a third electrical signal of a close object is used to determine whether there is a transmitter suspended on the touch device, wherein the second electrical signal includes the third electrical signal.

The purpose of the present invention and solving its technical problems can also be further achieved by adopting the following technical measures.

In the aforementioned method, when the intensity of the third electrical signal is greater than a first threshold, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second threshold, It is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

The aforementioned method, wherein detecting the strength of the third electrical signal further includes: detecting a function value of the second electrical signal and the third electrical signal to determine whether there is the transmitter suspended on the touch device. .

The aforementioned method further includes: detecting whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is the default frequency, detecting The function value is measured, wherein the transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

The aforementioned method also includes: detecting whether the frequency of the third electrical signal is a default frequency, wherein when the frequency of the third electrical signal is the default frequency, detecting the intensity of the third electrical signal, wherein the transmitter The transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

The aforementioned method, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, when it is determined that the transmitter is suspended on the touch device, it is detected simultaneously or in a time-sharing manner that the transmitter is on the plurality of driving electrodes. The floating position on the electrode and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned method, when it is determined that the transmitter is suspended on the touch device, an area is set. The area includes the floating position of the transmitter, and the detection of the transmitter is performed in this area. Outside the area, The touch device performs mutual capacitance touch detection.

The aforementioned method, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, and when the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, detecting All or part of the third electrical signal is used to detect the intensity of the third electrical signal, or when the coverage area of the plurality of sensing electrodes is greater than the coverage area of the plurality of driving electrodes, all of the plurality of sensing electrodes are detected. or part to detect the strength of the third electrical signal.

The aforementioned method, wherein when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float, or when all or part of the plurality of sensing electrodes are detected. Partially, the undetected driving electrodes and sensing electrodes are set to floating.

The purpose of the present invention and solving its technical problems are also achieved by adopting the following technical solutions. A method for determining that a transmitter is close to a touch device is proposed according to the present invention, including: sensing a first electrical signal approaching a touch device to generate a second electrical signal; detecting a signal exported from the touch device to The strength of a third electrical signal of a close object is used to determine whether there is a transmitter suspended on the touch device, wherein the second electrical signal includes the third electrical signal.

The purpose of the present invention and solving its technical problems are also achieved by adopting the following technical solutions. A touch device proposed according to the present invention includes: an electrode module that senses a first electrical signal to generate a second electrical signal; and a control module that detects the intensity of the second electrical signal to determine whether There is a transmitter floating on the touch device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

In the aforementioned touch device, when the intensity of the second electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device. When the intensity of the second electrical signal is greater than a second critical value, it is determined that the transmitter is suspended in the touch device. When, it is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

The aforementioned touch device, wherein the control module detects whether the frequency of the second electrical signal is a default frequency, and when the frequency of the second electrical signal is the default frequency, the control module detects the second electrical signal The intensity of the transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In the aforementioned touch device, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When it is determined that the transmitter is suspended in the touch device, the control module detects the position of the transmitter simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned touch device, when it is determined that the transmitter is suspended on the touch device, the control module sets an area that includes the floating position of the transmitter, and the area detects the transmitter. The electrode module outside this area performs mutual capacitance touch detection.

In the aforementioned touch device, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the control module detects the plurality of sensing electrodes. All or part of the driving electrodes are used to detect the intensity of the second electrical signal, or when the coverage area of the sensing electrodes is greater than the coverage area of the driving electrodes, the control module detects the intensity of the second electrical signal. All or part of the strip sensing electrodes are used to detect the intensity of the second electrical signal.

In the aforementioned touch device, when the control module detects all or part of the plurality of driving electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float, or when the control module When detecting all or part of the plurality of sensing electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float.

The purpose of the present invention and solving its technical problems are further achieved by adopting the following technical solutions. A touch device proposed according to the present invention includes: an electrode module that senses a first electrical signal to generate a second electrical signal, and a third electrical signal in the second electrical signal is derived through a nearby object ; and a control module that detects the strength of the third electrical signal to determine whether there is a transmitter suspended in the touch device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

In the aforementioned touch device, when the intensity of the third electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second critical value, it is determined that the transmitter is suspended in the touch device. , it is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

In the aforementioned touch device, the control module detects a function value of the second electrical signal and the third electrical signal to determine whether there is the transmitter suspended on the touch device.

The aforementioned touch device, wherein the control module detects whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is the default frequency When the control module detects the function value, the transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

In the aforementioned touch device, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When it is determined that the transmitter is suspended in the touch device, the control module detects the position of the transmitter simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned touch device, when it is determined that the transmitter is suspended on the touch device, the control module sets an area that includes the floating position of the transmitter, and the area detects the transmitter. The electrode module outside this area performs mutual capacitance touch detection.

In the aforementioned touch device, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the control module detects the plurality of sensing electrodes. All or part of the driving electrodes are used to detect the intensity of the third electrical signal, or when the coverage area of the sensing electrodes is greater than the coverage area of the driving electrodes, the control module detects the intensity of the third electrical signal. All or part of the strip sensing electrodes are used to detect the intensity of the third electrical signal.

In the aforementioned touch device, when the control module detects all or part of the plurality of driving electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float, or when the control module When detecting all or part of the plurality of sensing electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float.

The purpose of the present invention and solving its technical problems are further achieved by adopting the following technical solutions. According to a touch processor proposed by the present invention, executing the above method of determining that a transmitter is close to a touch device includes: a device for detecting the strength of a second electrical signal, wherein a touch device senses a first electrical signal , to generate the second electrical signal; and according to the strength of the second electrical signal, determine whether there is a device of a transmitter suspended on the touch device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

The aforementioned touch processor, wherein when the intensity of the second electrical signal is greater than a first threshold, it is determined that the transmitter is suspended in the touch device, and when the intensity of the second electrical signal is greater than a second threshold When the second threshold value is greater than the first threshold value, it is determined that the transmitter touches the touch device.

The aforementioned touch processor further includes: a device for detecting whether the frequency of the second electrical signal is a default frequency, wherein when the frequency of the second electrical signal is the default frequency, the frequency of the second electrical signal is detected. intensity, wherein the transmitter emits the first electrical signal, and the frequency of the first electrical signal is the default frequency.

The aforementioned touch processor, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, when it is determined that the transmitter is suspended on the touch device, it detects whether the transmitter is on the touch device simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

The aforementioned touch processor, when it is determined that the transmitter is suspended on the touch device, an area is set, the area includes the floating position of the transmitter, and the area detects the transmitter, The touch device outside the area performs mutual capacitance touch detection.

The aforementioned touch processor, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the plurality of sensing electrodes are detected. Driving all or part of the electrodes to detect the intensity of the second electrical signal, or detecting the plurality of sensing electrodes when the coverage area of the plurality of sensing electrodes is greater than the coverage area of the plurality of driving electrodes All or part of the second electrical signal to detect the intensity of the second electrical signal.

In the aforementioned touch processor, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float, or when detecting any of the plurality of sensing electrodes, When all or part of , the undetected driving electrodes and sensing electrodes are set to floating.

The purpose of the present invention and solving its technical problems are further achieved by adopting the following technical solutions. According to a touch processor proposed by the present invention, the method for executing the above method of determining that a transmitter is close to a touch device includes: a device for detecting the strength of a third electrical signal, wherein a touch device senses a first electrical signal. , to generate a second electrical signal, and the third electrical signal in the second electrical signal is exported from a touch device to a proximate object; and based on the strength of the third electrical signal, it is determined whether there is a floating object on the touch screen. A transmitter device for a control device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

The aforementioned touch processor, wherein when the intensity of the third electrical signal is greater than a first threshold, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second threshold When, it is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

In the aforementioned touch processor, detecting the strength of the third electrical signal further includes: detecting a function value of the second electrical signal and the third electrical signal to determine whether there is the floating point on the touch device. Transmitter.

The aforementioned touch processor further includes: a device for detecting whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is When the default frequency is set, the function value is detected, wherein the transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency.

The aforementioned touch processor, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes, when it is determined that the transmitter is suspended on the touch device, it detects whether the transmitter is on the touch device simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

The aforementioned touch processor, when it is determined that the transmitter is suspended on the touch device, an area is set, the area includes the floating position of the transmitter, and the area detects the transmitter, The touch device outside the area performs mutual capacitance touch detection.

The aforementioned touch processor, wherein the touch device includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the plurality of sensing electrodes are detected. Driving all or part of the electrodes to detect the intensity of the third electrical signal, or detecting the plurality of sensing electrodes when the coverage area of the plurality of sensing electrodes is greater than the coverage area of the plurality of driving electrodes All or part of the third electrical signal to detect the intensity of the third electrical signal.

In the aforementioned touch processor, when all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float, or when detecting any of the plurality of sensing electrodes, When all or part of , the undetected driving electrodes and sensing electrodes are set to floating.

The purpose of the present invention and solving its technical problems are further achieved by adopting the following technical solutions. A touch control system proposed according to the present invention includes a transmitter and a touch control device. The transmitter sends a first electrical signal. The touch device senses the first electrical signal to induce a second electrical signal, and detects the strength of the second electrical signal to determine whether the transmitter is suspended on the touch device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

In the aforementioned touch control system, when the intensity of the second electrical signal is greater than a first critical value, it is determined that the transmitter is suspended in the touch device. When the intensity of the second electrical signal is greater than a second critical value, When, it is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

The aforementioned touch system, wherein the touch device detects whether the frequency of the second electrical signal is a default frequency, and when the frequency of the second electrical signal is the default frequency, the control module detects the second electrical signal. The strength of the signal, where the frequency of the first electrical signal is the default frequency.

The aforementioned touch system, wherein the touch device includes: an electrode module that senses the first electrical signal to generate the second electrical signal; and a control module that detects the intensity of the second electrical signal to determine the Whether the transmitter is suspended over the touch device.

In the aforementioned touch control system, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When it is determined that the transmitter is suspended on the touch device, the control module detects the position of the transmitter simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned touch system, when it is determined that the transmitter is suspended on the touch device, the control module sets an area that includes the floating position of the transmitter, and the area detects the transmitter. The electrode module outside this area performs mutual capacitance touch detection.

In the aforementioned touch system, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the control module detects the plurality of sensing electrodes. All or part of the driving electrodes are used to detect the intensity of the second electrical signal, or when the coverage area of the sensing electrodes is greater than the coverage area of the driving electrodes, the control module detects the intensity of the second electrical signal. All or part of the strip sensing electrodes are used to detect the intensity of the second electrical signal.

In the aforementioned touch system, when the control module detects all or part of the plurality of driving electrodes, the control module sets the undetected driving electrodes and sensing electrodes to floating, or when the control module When detecting all or part of the plurality of sensing electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float. The purpose of the present invention and solving its technical problems are further achieved by adopting the following technical solutions. A touch control system proposed according to the present invention includes a transmitter and a touch control device. The transmitter sends a first electrical signal. The touch device senses the first electrical signal to induce a second electrical signal, and a third electrical signal in the second electrical signal is derived through a proximate object, wherein the touch device detects the third electrical signal. The strength of the electrical signal is used to determine whether the transmitter is suspended on the touch device.

The objectives of the present invention and solving the technical problems thereof can also be further achieved by adopting the following technical measures.

In the aforementioned touch system, when the intensity of the third electrical signal is greater than a first threshold, it is determined that the transmitter is suspended in the touch device, and when the intensity of the third electrical signal is greater than a second threshold, it is determined that the transmitter is suspended in the touch device. When, it is determined that the transmitter touches the touch device, wherein the second threshold value is greater than the first threshold value.

In the aforementioned touch control system, the touch control device detects a function value of the second electrical signal and the third electrical signal to determine whether there is the transmitter suspended on the touch control device. The aforementioned touch system, wherein the touch device detects whether the frequency of the second electrical signal or the third electrical signal is a default frequency, wherein when the frequency of the second electrical signal or the third electrical signal is the default frequency When the frequency is determined, the control module detects the function value, wherein the frequency of the first electrical signal is the default frequency.

The aforementioned touch control system, wherein the touch control device includes: an electrode module that senses the first electrical signal to generate the second electrical signal; and a control module that detects the intensity of the third electrical signal to determine the Whether the transmitter is suspended over the touch device.

In the aforementioned touch control system, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When it is determined that the transmitter is suspended on the touch device, the control module detects the position of the transmitter simultaneously or in a time-sharing manner. The floating position on the plurality of driving electrodes, and the floating position of the transmitter on the plurality of sensing electrodes.

In the aforementioned touch system, when it is determined that the transmitter is suspended on the touch device, the control module sets an area that includes the floating position of the transmitter, and the area detects the transmitter. The electrode module outside this area performs mutual capacitance touch detection.

In the aforementioned touch system, the electrode module includes a plurality of driving electrodes and a plurality of sensing electrodes. When the coverage area of the plurality of driving electrodes is greater than the coverage area of the plurality of sensing electrodes, the control module detects the plurality of sensing electrodes. All or part of the driving electrodes are used to detect the intensity of the third electrical signal, or when the coverage area of the sensing electrodes is greater than the coverage area of the driving electrodes, the control module detects the intensity of the third electrical signal. All or part of the strip sensing electrodes are used to detect the intensity of the third electrical signal.

In the aforementioned touch system, when the control module detects all or part of the plurality of driving electrodes, the control module sets the undetected driving electrodes and sensing electrodes to floating, or when the control module When detecting all or part of the plurality of sensing electrodes, the control module sets the undetected driving electrodes and sensing electrodes to float.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Through the above technical solutions, the touch processor, touch device, touch system and touch method of the present invention have at least the following advantages and beneficial effects: The touch processor, touch device, touch system and touch method of the present invention Method, you can know early that the active pen is close to the touch panel/screen for corresponding detection.

To sum up, the present invention relates to a touch processor, a touch device, a touch system and a touch method. The touch processor detects the strength of a third electrical signal, one of the touch devices senses a first electrical signal to generate a second electrical signal, and the third electrical signal in the second electrical signal is derived from the Touch devices are exported to a proximity object. Subsequently, the touch processor determines whether there is a transmitter suspended on the touch device according to the strength of the third signal. The invention has made significant progress in technology and has obvious positive effects. It is truly a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to have a clearer understanding of the technical means of the present invention, it can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present invention more obvious and understandable. , the following is a detailed description of the preferred embodiments, together with the accompanying drawings.

Description of the drawings

Figure 1 is a schematic diagram of a touch system according to an embodiment of the present invention.

Figure 2 is a schematic diagram of a touch system according to an embodiment of the present invention.

Figure 3 is a schematic diagram of a touch system according to an embodiment of the present invention.

Figure 4 is a schematic diagram of a touch system according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch device according to an embodiment of the present invention.

Figure 6 is a schematic flowchart of a touch method according to an embodiment of the present invention.

FIG. 7 is a schematic flowchart of a touch method according to an embodiment of the present invention.

Ip,Ih,It,Ig: current Cm: control module

Em: electrode module Ob: close object

S1: first electrical signal S2: second electrical signal

S3: Third electrical signal T: Transmitter

Td: touch device Ts: touch system

Tx: driving electrode Rx: sensing electrode

Detailed ways

In order to further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following is a description of the touch processor, touch device, touch system and touch control system proposed by the present invention in conjunction with the drawings and preferred embodiments. The specific implementation, structure, method, steps, characteristics and efficacy of the method are described in detail below.

Please refer to FIG. 1 , which is a schematic diagram of a touch system according to an embodiment of the present invention. In Figure 1, the active pen is suspended above the touch panel/screen. The control module of the touch panel/screen can detect the electrical signal sent by the active pen and thereby learn the position where the active pen is suspended.

In one embodiment, the electrical signal emitted by the active pen is connected to the ground through the touch panel/screen, and then connected to the human body or other objects holding the active pen through the ground, thereby forming an electrical circuit. Due to the formation of this electrical circuit, the control module is able to detect weak current through the electrodes of the touch panel/screen. In other words, the current of this electrical circuit includes the current Ip, the current Ig, and the current It in Figure 1 . As shown in Figure 1, the active pen outputs current Ip to the touch panel/screen, and is connected to the ground GND through the touch panel/screen, and then the ground GND transmits the current Ig to the hand holding the active pen, which is the above The human body, and the current It is returned to the active pen through the hand holding the active pen.

In another embodiment, in addition to the above-mentioned electrical circuit, the electrical signal emitted by the active pen can also be passed through the human body or other objects that touch or float on the touch panel, and then through the human body or other objects holding the active pen. Other objects form another electrical circuit. The current of this electrical circuit includes the current Ip, the current Ih, and the current It in Figure 2 . As shown in Figure 2, the active pen outputs current Ip to the touch panel/screen, and the touch panel/screen transmits current Ih to the hand holding the active pen, and returns current It to the active pen through the hand holding the active pen. Pen.

In yet another embodiment, the above two forms of electrical circuits exist simultaneously. As shown in FIG. 3 , it simultaneously includes the electrical loop formed by the above-mentioned current Ip, current Ig, and current It, as well as the electrical loop formed by the current Ip, current Ih, and current It.

It should be noted that the human body parts shown in Figures 1 to 3 can be the hand holding the active pen, or other parts of the human body. For example, the user holds the touch panel/screen with his left hand and the active pen with his right hand. The electrical circuit in Figure 2 above is sent from the active pen, passes to the left hand through the touch panel/screen, then passes to the right hand through the human body, and finally returns to the active pen.

It is also worth mentioning that the right hand holding the active pen can touch the touch panel/screen, it can also float above the touch panel/screen like the active pen, or it can be close to the touch panel/screen and generate electricity with it. Magnetic induction effect.

In one embodiment, the touch panel/screen may include several types of electrodes, such as driving electrodes (Tx), sensing electrodes (Rx), dummy electrodes (dummy), etc. The above-mentioned driving electrodes and sensing electrodes may be multiple parallel electrodes respectively, but the driving electrodes and sensing electrodes are orthogonal to each other. The present invention does not limit the number, form, and shape of various electrodes.

The driving electrode Tx and the sensing electrode Rx mentioned in the present invention refer to when the touch panel/screen is in the mutual capacitance detection mode, causing at least one driving electrode Tx to send out a driving signal and simultaneously detecting external The conductive object causes electrical changes on the sensing electrode Rx. The driving electrode Tx can also be called the first electrode, and the sensing electrode Rx can be called the second electrode. These two electrodes can also interchange roles.

In one example, the areas occupied by the driving electrodes and the sensing electrodes are different. In one embodiment, the drive electrodes occupy a larger area than the sense electrodes. In another embodiment, the drive electrodes occupy less area than the sense electrodes.

In one example, the control module can be connected to both the drive electrode and the sense electrode. In another example, the control module can be connected to the driving electrode and the sensing electrode in a time-sharing manner. In other words, there can be a multiplexer circuit or connection network between the drive and sense electrodes and the control module. In a certain example, the so-called control module can be implemented on a single chip or on multiple chips. The present invention does not limit the implementation of the control module.

In one embodiment, the control module includes at least one detection module, which is used to connect the driving electrode Tx and/or the sensing electrode Rx of the touch panel/screen, and is used to detect the electrical signal emitted by the active pen. In other words, the current Ip shown in Figures 1 to 3 is detected.

In one example, the above-mentioned detection module can connect the driving electrode Tx and the sensing electrode Rx to simultaneously detect the position of the active pen in two axes. In another example, the above-mentioned detection module can connect the driving electrode Tx and the sensing electrode Rx in a time-sharing manner, and detect the position of the active pen in two axes in a time-sharing manner.

In other words, when the detection module detects the proximity position of the active pen on the touch panel/screen, it can simultaneously obtain two coordinate parameters (for example, X and Y) of the two-dimensional coordinates of the active pen on the touch panel/screen. ), or obtain the two coordinate parameters of the two-dimensional coordinates of the active pen on the touch panel/screen successively, for example, obtain the X coordinate first, then obtain the Y coordinate, and vice versa.

When the control module is in the electrical signal detection mode of the active pen, when the above-mentioned detection module is connected to the driving electrode Tx, the sensing electrode Rx or other electrodes not connected to the detection module can be set to floating, that is, not Ground. Therefore, the current Ip will be concentrated on the driving electrode Tx, making it easier for the detection module to detect. On the contrary, when the above-mentioned detection module is connected to the sensing electrode Rx, the driving electrode Tx or other electrodes not connected to the detection module can be set to floating, that is, not connected to ground. Therefore, the current Ip will be concentrated on the sensing electrode Rx, making it easier for the detection module to detect. Broadly speaking, when the detection module is connected to some electrodes, other electrodes can be set to float.

It is worth noting that the above method can be used to detect the current Ip or the current Ih. In other words, in the above electrical signal detection mode, the control module can detect the electrical changes caused by the Ip current and/or the Ih current. The so-called electrical change here can be the current value, the absolute value of the current value, the amount of charge transfer, the voltage value, the voltage difference, etc. In one embodiment, the control module may first measure the reference value before performing the above-mentioned electrical signal detection mode. The above-mentioned electrical change may be a change based on this reference value.

One of the main purposes of the present invention is to improve the detection capability of an active pen suspended above the touch panel/screen. In the case where the active pen does not increase the electrical signal power, the control module according to the present invention can detect the active pen further above the touch panel/screen. It is also possible that when the active pen reduces the electrical signal power, the control module can detect the active pen at the same place above the touch panel/screen to reduce the power consumption of the active pen.

In one embodiment, when the control module detects that the Ip current value is greater than a certain critical value, or the absolute value of the difference between the Ip current value and the reference value is greater than a certain critical value, it can be determined that the active pen is suspended on the touch screen. Above the panel/screen. In another embodiment, when the control module detects that the Ih current value is greater than a certain critical value, or the absolute value of the difference between the Ih current value and the reference value is greater than a certain critical value, it can be determined that the active pen is suspended in the Above the touch panel/screen.

In some embodiments, when the control module detects that a function value of the Ip and Ih current values is greater than a certain critical value, it can be determined that the active pen is suspended above the touch panel/screen. For example, the above function value may be related to the sum of the absolute value of the Ip current value and the absolute value of the Ih current value, or may be related to the difference between the absolute value of the Ip current value and the absolute value of the Ih current value. In some examples, the above function value can be related to the absolute value of the difference between the Ip current value and the reference value, and the absolute value of the difference between the Ih current value and the reference value, for example, the sum of the two, or the two The difference between the two.

In addition, the above-mentioned function value may be related to the charge transfer amount of the Ip current and the Ih current.

In one embodiment, if the control module only needs to detect whether the active pen is suspended above the touch panel/screen, but does not need to detect the floating projection position of the active pen, the detection module of the control module only needs to be connected to the driver. It can be either electrode Tx or sensing electrode Rx. As mentioned above, when a certain type of electrode covers a large area, the control module can preferentially connect to the electrode with a larger area, such as the driving electrode Tx.

Generally speaking, when the active pen is detected, it does not matter whether the active pen has contacted the touch panel/screen or is just floating above the touch panel/screen. The control module will ignore objects that touch the touch panel/screen. These objects can be the palm holding the active pen, the hand holding the touch panel/screen, or other objects.

Since the detection mode of the active pen signal is different from the capacitive detection mode, in one embodiment, when the control module detects that the active pen contacts or hovers above the touch panel/screen, the control module can stop the process. Capacitive detection.

In another embodiment, the control module can continue to perform capacitive detection, but can ignore the area where the current Ip and/or the current Ih is detected. In other words, the area where the current Ip and/or the current Ih is detected is the area where the active pen and/or hand contact or float on the touch panel/screen, so there is no need to detect mutual capacitance in such areas, or Ignore the results of mutual capacitance detection in such areas.

In one embodiment, the control module may include a multiplexer circuit or a connection network. When detecting an active laptop signal, the detection module is only connected to the driving electrode Tx or the first electrode. When performing mutual capacitance detection, the detection module is only connected to the sensing electrode Rx or the second type of electrode.

Based on the above, the present invention proposes a touch device to detect whether there is a transmitter suspended on the touch device. Please refer to FIG. 4 . When a transmitter T approaches the touch device Td and sends a first electrical signal S1 , the touch device Td senses the first electrical signal S1 to generate a second electrical signal S2 . The transmitter T may be the aforementioned active pen, and the touch device Td may be the aforementioned touch panel/screen. When the first electrical signal S1 is the aforementioned current Ip, the second electrical signal S2 is the current generated by the induced current Ip, such as a displacement current. Subsequently, the touch device Td can detect the intensity of the second electrical signal S2 to determine whether the transmitter T is suspended on the touch device Td.

The touch device Td can determine whether the transmitter T touches or hovers on the touch device Td through a first threshold value and a second threshold value. The first threshold is a threshold for detecting floating objects, and the second threshold is a threshold for detecting touched objects. Therefore, the second critical value is greater than the first critical value. When the touch device Td detects that the intensity of the second electrical signal S2 is greater than the first threshold value, it is determined that the transmitter T is suspended on the touch device Td. At this time, the touch device Td can further detect whether the second electrical signal S2 is less than the second threshold value. When the touch device Td detects that the intensity of the second electrical signal S2 is less than the second threshold value, it is determined that the transmitter T is suspended on the touch device Td. When the touch device Td detects that the intensity of the second electrical signal S2 is greater than the second threshold value, it is determined that the transmitter T touches the touch device Td.

Furthermore, the first electrical signal S1 generated by the transmitter T includes a default frequency. The default frequency may be a single frequency or may be a mixture of multiple frequencies. Accordingly, the frequency of the second electrical signal S2 generated by sensing the first electrical signal S1 should also be this default frequency. Therefore, the touch device Td can first detect the frequency of the second electrical signal S2 before detecting the intensity of the second electrical signal S2 to determine whether the transmitter close to the touch device Td is corresponding to the touch device Td. Transmitter T. When the touch device Td detects that the frequency of the second electrical signal S2 is the above-mentioned default frequency, it is determined that there is a transmitter T corresponding to the touch device Td. At this time, the touch device Td can further detect the intensity of the second electrical signal S2 to determine that the transmitter T is touching or floating on the touch device Td. If the touch device Td detects that the frequency of the second electrical signal S2 is not the default frequency, it is determined that there is no transmitter T corresponding to the touch device Td, and subsequent electrical signal strength detection naturally does not need to be performed. implement.

Of course, the touch device Td can also detect the frequency of the second electrical signal S2 after detecting the intensity of the second electrical signal S2 to determine whether the transmitter suspended on the touch device Td is the default transmitter. Device T.

Please refer to FIG. 4 again. When a proximate object Ob of the coupling transmitter T approaches the touch control device Td, a third electrical signal S3 of the second electrical signal S2 will be conducted to the proximate object Ob. The proximity object Ob may be the hand holding the transmitter T or the other hand holding the touch device Td. The third electrical signal S3 may be part or all of the second electrical signal S2. For example, when the touch device Td is in the electrical signal detection mode of the transmitter T, and other electrodes that are not connected to the aforementioned detection module are set to floating, that is, not grounded, the second electrical signal S2 will all be conducted to the proximity sensor. The object Ob, that is, the third electrical signal S3 is the second electrical signal S2. On the contrary, when the touch device Td is in the electrical signal detection mode of the transmitter T, and the other electrodes not connected to the aforementioned detection module are all grounded, the third electrical signal S3 is a part of the second electrical signal S2. The other part of the second electrical signal S2 will include an electrical signal conducted to ground, such as the aforementioned current Ig. Therefore, the touch device Td can also detect the intensity of the third electrical signal S3 to determine whether the transmitter T is suspended on the touch device Td.

Accordingly, the present invention proposes a touch device to detect whether there is a transmitter suspended on the touch device. Referring to FIG. 4 , the transmitter T emits a first signal S1, and the touch device Td senses the first signal S1 to generate a second electrical signal S2. At this time, the third electrical signal S3 of the second electrical signal S2 is derived through the proximity object Ob. The touch device Td can detect the intensity of the third electrical signal S3 to determine whether there is a transmitter T suspended on the touch device Td.

Similarly, the touch device Td can determine whether the transmitter T is touching or floating on the touch device Td through the first threshold value and the second threshold value. When the touch device Td detects that the intensity of the third electrical signal S3 is greater than the first threshold value, it is determined that the transmitter T is suspended on the touch device Td. At this time, the touch device Td can further detect whether the third electrical signal S3 is less than the second threshold value. When the touch device Td detects that the intensity of the third electrical signal S3 is less than the second threshold value, it is determined that the transmitter T is suspended on the touch device Td. When the touch device Td detects that the intensity of the third electrical signal S3 is greater than the second threshold value, it is determined that the transmitter T touches the touch device Td.

Furthermore, the frequencies of the second electrical signal S2 and the third electrical signal S3 must be the same, so the touch device Td can first detect the frequency of the third electrical signal S3 to determine the intensity of the third electrical signal S3 before detecting the intensity of the third electrical signal S3. Whether the transmitter close to the touch device Td is the transmitter T corresponding to the touch device Td. When the touch device Td detects that the frequency of the third electrical signal S3 is the above-mentioned default frequency, it is determined that there is a transmitter T corresponding to the touch device Td. At this time, the touch device Td can further detect the intensity of the third electrical signal S3 to determine whether the transmitter T is touching or floating on the touch device Td. If the touch device Td detects that the frequency of the third electrical signal S3 is not the default frequency, it is determined that there is no transmitter T corresponding to the touch device Td, and subsequent electrical signal strength detection naturally does not need to be performed. implement.

In addition, the touch device Td can further detect a function value of the second electrical signal S2 or the third electrical signal S3 to determine whether the frequency of the second electrical signal S2 or the third electrical signal S3 matches the default frequency. Whether the communication device T is suspended on the touch device Td. When the touch device Td detects that the function value is greater than a third threshold value, it is determined that the transmitter T is suspended on the touch device Td. The function value may be related to the sum of the absolute value of the second electrical signal S2 and the third electrical signal S3, or may be related to the difference between the absolute value of the second electrical signal S2 and the third electrical signal S3. In some examples, the above function value may be related to the absolute value of the difference between the second electrical signal S2 and the reference value, and the absolute value of the difference between the third electrical signal S3 and the reference value, for example, the sum of the two. , or the difference between the two.

Please refer to FIG. 5 . The touch device Td includes a control module Cm and an electrode module Em. The electrode module Em includes a plurality of driving electrodes Tx and a plurality of sensing electrodes Rx. When it is determined that the transmitter T is suspended on the touch device Td, the control module Cm can simultaneously detect the floating position of the transmitter T on the plurality of driving electrodes Tx and the plurality of sensing electrodes Rx, and can also detect the position in a time-sharing manner. The transmitter T is in a floating position on the plurality of driving electrodes Tx and the plurality of sensing electrodes Rx.

When the control module Cm determines that the transmitter T is suspended on the touch device Td, the control module Cm sets an area including the floating position of the transmitter T. Furthermore, the control module Cm detects the transmitter T in this area, and performs mutual capacitance touch detection on the driving electrode Tx and the sensing electrode Rx outside the area.

When the coverage area of the plurality of driving electrodes Tx is larger than the coverage area of the plurality of sensing electrodes Rx, the control module Cm detects all or part of the plurality of driving electrodes Tx to detect the second electrical signal S2 or the third electrical signal S3 intensity, or a function value of the second electrical signal S2 or the third electrical signal S3. On the contrary, when the coverage area of the plurality of sensing electrodes Rx is greater than the coverage area of the plurality of driving electrodes Tx, the control module Cm detects all or part of the plurality of sensing electrodes Rx to detect the second electrical signal S2 or the third electrical signal S2. The intensity of the electrical signal S3 is either a function value of the second electrical signal S2 or the third electrical signal S3.

When the control module Cm detects all or part of the multiple driving electrodes Tx, the touch device Td sets the undetected driving electrodes Tx and sensing electrodes Rx to floating, or when the control module Cm detects multiple When sensing all or part of the electrodes Rx, the touch device Td sets the undetected driving electrodes Tx and sensing electrodes Rx to float.

Referring to FIG. 6 , the present invention proposes a touch method for determining that a transmitter is close to a touch device. In step 600, a first electrical signal approaching a touch device is sensed to generate a second electrical signal. In step 610, it is detected whether the intensity of the second electrical signal is greater than a first threshold value to determine whether there is a transmitter suspended on the touch device. In step 620, when the intensity of the second electrical signal is less than the first threshold, it is determined that no transmitter is suspended on the touch device. In step 630, when the intensity of the second electrical signal is greater than the first threshold, it is detected whether the intensity of the second electrical signal is greater than a second threshold. In step 632, when the intensity of the second electrical signal is greater than the second threshold, it is determined that the transmitter touches the touch device. In step 634, when the intensity of the second electrical signal is less than the second threshold, it is determined that the transmitter is suspended on the touch device.

In addition, before step 610, step 602 may be performed to detect whether the frequency of the second electrical signal is a default frequency. When the frequency of the second electrical signal is the default frequency, step 610 is performed to detect the strength of the second electrical signal, wherein the transmitter sends the first electrical signal, and the frequency of the first electrical signal is the default frequency. When the frequency of the second electrical signal is not the default frequency, step 620 is executed to determine that no transmitter is suspended on the touch device, and the detection of the second electrical signal strength is terminated.

When it is determined that the transmitter is suspended on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in a time-sharing manner. location, as shown in step 640. Furthermore, in step 650, an area is set, which area includes the floating position of the transmitter, wherein the area performs detection of the transmitter, and the touch device outside the area performs mutual capacitance touch detection. Measurement.

Referring to FIG. 7 , the present invention proposes a touch method for determining that a transmitter is close to a touch device. In step 700, a first electrical signal approaching a touch device is sensed to generate a second electrical signal. In step 710, it is detected whether the intensity of a third electrical signal exported from the touch device to a proximate object is greater than a first threshold value to determine whether there is a transmitter suspended in the touch device, wherein The second electrical signal includes the third electrical signal. In step 720, when the intensity of the third electrical signal is less than the first threshold, it is determined that no transmitter is suspended on the touch device. In step 730, when the intensity of the third electrical signal is greater than a first threshold, it is detected whether the intensity of the third electrical signal is greater than a second threshold. In step 732, when the intensity of the third electrical signal is greater than the second threshold, it is determined that the transmitter touches the touch device. In step 734, when the intensity of the third electrical signal is less than the second threshold, it is determined that the transmitter is suspended on the touch device. The above step 710 may also be to detect a function value of the second electrical signal and the third electrical signal to determine whether there is the transmitter suspended on the touch device.

In addition, before step 710, step 702 may be performed to detect whether the frequency of the second electrical signal or the third electrical signal is a default frequency. When the frequency of the second electrical signal or the third electrical signal is the default frequency, step 710 is executed to detect the intensity of the third electrical signal or a function value of the second electrical signal and the third electrical signal, where The transmitter emits the first electrical signal, and the frequency of the first electrical signal is the default frequency. When the frequency of the third electrical signal is not the default frequency, step 720 is executed to determine that no transmitter is suspended on the touch device, and the detection of the third electrical signal strength or function value is terminated.

When it is determined that the transmitter is suspended on the touch device, the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes are detected simultaneously or in a time-sharing manner. location, as shown in step 740. Furthermore, in step 750, an area is set, which area includes the floating position of the transmitter, wherein the area performs detection of the transmitter, and the touch device outside the area performs mutual capacitance touch detection. Measurement.

In addition, the electrodes to be detected can be determined based on the coverage area of the electrodes. When the coverage area of the driving electrodes is larger than the coverage area of the sensing electrodes, all or part of the driving electrodes are detected to determine whether there is the transmitter suspended on the touch device. When all or part of the plurality of driving electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float.

When the coverage area of the plurality of sensing electrodes is greater than the coverage area of the plurality of driving electrodes, all or part of the plurality of sensing electrodes are detected to determine whether there is the transmitter suspended on the touch device. . When all or part of the plurality of sensing electrodes are detected, the undetected driving electrodes and sensing electrodes are set to float.

Based on the above, the present invention proposes a touch processor to execute the above method of determining that a transmitter is close to a touch device. First, the intensity of a second electrical signal is detected, and a touch device senses a first electrical signal to generate a second electrical signal. Then, based on the strength of the second electrical signal, it is determined whether there is a transmitter suspended on the touch device. All other relevant details are as mentioned above.

Furthermore, the present invention proposes a touch processor to execute the above method of determining that the transmitter is close to the touch device. First, detect the intensity of a third electrical signal, wherein the touch device senses a first electrical signal to generate a second electrical signal, and the third electrical signal in the second electrical signal is generated from a touch device. Export to a nearby object. Then, based on the strength of the third electrical signal, it is determined whether there is a transmitter suspended on the touch device. All other relevant details are as mentioned above.

Based on the above, the present invention proposes a touch system Ts, which includes a transmitter T and the above-mentioned touch device Td, as shown in FIG. 4 . The transmitter T emits a first electrical signal S1. The touch device Td senses the first electrical signal S1 to generate a second electrical signal S2, and detects the intensity of the second electrical signal S2 to determine whether the transmitter T is suspended on the touch device Td.

Furthermore, the present invention proposes a touch system Ts, which includes a transmitter T and the above-mentioned touch device Td, as shown in FIG. 4 . The transmitter T emits a first electrical signal s1. The touch device Td senses the first electrical signal S1 to generate a second electrical signal S2, and a third electrical signal S3 in the second electrical signal S2 is derived via a proximate object Ob, where the touch device Td detects The intensity of the third electrical signal S3 is measured to determine whether the transmitter T is suspended on the touch device Td.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field will Skilled personnel, without departing from the scope of the technical solution of the present invention, can use the methods and technical contents disclosed above to make slight changes or modifications to equivalent embodiments with equivalent changes. However, as long as they do not depart from the content of the technical solution of the present invention, Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims (29)

1. The touch control method is characterized by comprising the following steps of:

sensing a first electric signal approaching to a touch device to generate a second electric signal, wherein the frequency of the first electric signal is a default frequency;

detecting whether the frequency of the second electric signal is the default frequency;

detecting a function value of the second electric signal when the frequency of the second electric signal is the default frequency, wherein the function value comprises a first absolute value of a difference value between the second electric signal and a reference value; and

and detecting the intensity of the second electric signal according to the function value of the second electric signal so as to judge whether a transmitter suspended in the touch device exists or not.

2. The touch method of claim 1, wherein when the intensity of the second electrical signal is greater than a first threshold, it is determined that the transmitter is suspended from the touch device, and when the intensity of the second electrical signal is greater than a second threshold, it is determined that the transmitter touches the touch device, wherein the second threshold is greater than the first threshold.

3. The touch method of claim 1, wherein the transmitter transmits the first electrical signal.

4. The touch method according to claim 1, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and the floating positions of the transmitter on the plurality of driving electrodes and the floating positions of the transmitter on the plurality of sensing electrodes are detected simultaneously or in a time-sharing manner when the transmitter is determined to be floating on the touch device.

5. The touch method according to claim 1, wherein when the transmitter is determined to be suspended in the touch device, a region is set, the region including a suspension position of the transmitter, wherein the region performs detection of the transmitter, and the touch device outside the region performs mutual capacitance touch detection.

6. The touch method according to claim 1, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, all or part of the plurality of driving electrodes are detected to detect the intensity of the second electrical signal when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, or all or part of the plurality of sensing electrodes are detected to detect the intensity of the second electrical signal when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes.

7. The touch method of claim 6, wherein the undetected driving electrodes and sensing electrodes are set to float when all or part of the plurality of driving electrodes are detected, or the undetected driving electrodes and sensing electrodes are set to float when all or part of the plurality of sensing electrodes are detected.

8. A touch device, comprising:

an electrode module for sensing a first electrical signal to generate a second electrical signal, and the frequency of the first electrical signal is a default frequency; and

a control module for detecting whether the frequency of the second electric signal is the default frequency;

detecting a function value of the second electric signal when the frequency of the second electric signal is the default frequency, wherein the function value comprises a first absolute value of a difference value between the second electric signal and a reference value; and

and detecting the intensity of the second electric signal according to the function value of the second electric signal so as to judge whether a transmitter is suspended in the touch device.

9. The touch device of claim 8, wherein when the intensity of the second electrical signal is greater than a first threshold, the existence of the transmitter suspended in the touch device is determined, and when the intensity of the second electrical signal is greater than a second threshold, the existence of the transmitter touching the touch device is determined, wherein the second threshold is greater than the first threshold.

10. The touch device of claim 8, wherein the transmitter transmits the first electrical signal.

11. The touch device of claim 8, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and the control module detects the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner when the transmitter is determined to be floating on the touch device.

12. The touch device of claim 8, wherein the control module sets a region including a levitation position of the transmitter when the transmitter is levitated in the touch device, wherein the region detects the transmitter, and the electrode module outside the region performs mutual capacitance touch detection.

13. The touch device of claim 8, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and the control module detects all or part of the plurality of driving electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, or detects all or part of the plurality of sensing electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes.

14. The touch device of claim 13, wherein the control module sets undetected driving electrodes and sensing electrodes to float when the control module detects all or part of the plurality of driving electrodes, or sets undetected driving electrodes and sensing electrodes to float when the control module detects all or part of the plurality of sensing electrodes.

15. A touch processor, comprising:

a device for detecting the intensity of a second electric signal, wherein a touch device senses a first electric signal to generate the second electric signal, and the frequency of the first electric signal is a default frequency;

detecting whether the frequency of the second electric signal is the default frequency;

detecting a function value of the second electric signal when the frequency of the second electric signal is the default frequency, wherein the function value comprises a first absolute value of a difference value between the second electric signal and a reference value; and

and detecting the intensity of the second electric signal according to the function value of the second electric signal, and judging whether a device suspending in a transmitter of the touch device exists or not.

16. The touch processor of claim 15, wherein when the intensity of the second electrical signal is greater than a first threshold, it is determined that the transmitter is suspended from the touch device, and when the intensity of the second electrical signal is greater than a second threshold, it is determined that the transmitter touches the touch device, wherein the second threshold is greater than the first threshold.

17. The touch processor of claim 15, wherein the transmitter transmits the first electrical signal and the frequency of the first electrical signal is the default frequency.

18. The touch processor of claim 15, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, and detecting the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner when the transmitter is determined to be floating in the touch device.

19. The touch processor of claim 15, wherein when the transmitter is determined to be suspended in the touch device, a region is set, the region including a suspended position of the transmitter, wherein the region performs detection of the transmitter, and the touch device outside the region performs mutual capacitance touch detection.

20. The touch processor of claim 15, wherein the touch device comprises a plurality of driving electrodes and a plurality of sensing electrodes, wherein all or part of the plurality of driving electrodes are detected to detect the intensity of the second electrical signal when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, or all or part of the plurality of sensing electrodes are detected to detect the intensity of the second electrical signal when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes.

21. The touch processor of claim 20, wherein the undetected driving electrodes and sensing electrodes are set to float when all or part of the plurality of driving electrodes are detected, or the undetected driving electrodes and sensing electrodes are set to float when all or part of the plurality of sensing electrodes are detected.

22. A touch system, comprising:

a transmitter for transmitting a first electrical signal; and

the touch device senses the first electric signal to generate a second electric signal, and the frequency of the first electric signal is a default frequency;

Detecting whether the frequency of the second electric signal is the default frequency;

detecting a function value of the second electric signal when the frequency of the second electric signal is the default frequency, wherein the function value comprises a first absolute value of a difference value between the second electric signal and a reference value; and

and detecting the intensity of the second electric signal according to the function value of the second electric signal so as to judge whether the transmitter is suspended in the touch device.

23. The touch system of claim 22, wherein the presence of the transmitter floating in the touch device is determined when the intensity of the second electrical signal is greater than a first threshold, and the presence of the transmitter touching the touch device is determined when the intensity of the second electrical signal is greater than a second threshold, wherein the second threshold is greater than the first threshold.

24. The touch system of claim 22, wherein the touch device comprises:

an electrode module for sensing the first electrical signal to generate the second electrical signal; and

and the control module detects the intensity of the second electric signal to judge whether the transmitter is suspended in the touch device.

25. The touch system according to claim 24, wherein the touch device detects whether the frequency of the second electrical signal is the default frequency, wherein the control module detects the intensity of the second electrical signal when the frequency of the second electrical signal is the default frequency, wherein the frequency of the first electrical signal is the default frequency.

26. The touch system of claim 24, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, and the control module detects the floating position of the transmitter on the plurality of driving electrodes and the floating position of the transmitter on the plurality of sensing electrodes simultaneously or in a time-sharing manner when the transmitter is determined to be floating on the touch device.

27. The touch system of claim 24, wherein the control module sets a region including a levitation position of the transmitter when the transmitter is levitated in the touch device, wherein the region detects the transmitter, and the electrode module outside the region performs mutual capacitance touch detection.

28. The touch system of claim 24, wherein the electrode module comprises a plurality of driving electrodes and a plurality of sensing electrodes, the control module detects all or part of the plurality of driving electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of driving electrodes is larger than the coverage area of the plurality of sensing electrodes, or detects all or part of the plurality of sensing electrodes to detect the intensity of the second electrical signal when the coverage area of the plurality of sensing electrodes is larger than the coverage area of the plurality of driving electrodes.

29. The touch system of claim 28, wherein the control module sets undetected drive electrodes and sense electrodes to float when the control module detects all or part of the plurality of drive electrodes, or sets undetected drive electrodes and sense electrodes to float when the control module detects all or part of the plurality of sense electrodes.